The IAQ50X is an air measuring station with an ultra low-leak, high performance control damper that is integral to the flow sensing section. This patented design provides a solution that measures and controls flow in an 11" (279) deep assembly. The assembly exceeds AMCA class 1A leakage requirements, so it is perfect for building envelope penetrations. The complete unit is factory assembled and callibrated at 10 points, to provide effective setpoint monitoring and adjustment. The unit comes standard with an application specific control panel and actuator. Control with a 0-10 Vdc input from the BAS. Provides a 0-20 mA output that is proportioned to the CFM.